D5R Track-Type Tractor Connector Contact Description Caterpillar


Connector Contact Description
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D5R Track-Type Tractor [UENR3188]
ELECTRICAL AND STARTING SYSTEM
WIRING GP
1.1. ECM Pull Up Voltage
2.1. ECM Pull Down Voltage
3.1. Inputs
4.1. Outputs
5.1. Input/Output
6.1. D6N/EH
7.1. Implement ECM



Illustration 1g01309473

The Machine ECM will make decisions that are based on input data information and programming parameters that have been flashed to the ECM memory. After the ECM receives the input information, the ECM determines the correct response and sends an output signal to the appropriate device. The internal input circuits and the internal output circuits of the ECM are connected to the machine wiring harness by two 70 contact connectors (J1 and J2).

Note: The ECM is not serviceable. If the ECM is damaged, the ECM must be replaced. The rate of failure for the ECM is low. If the ECM is suspected of failure, contact your dealership's Technical Communicator for possible consultation with AVSpare before replacing the ECM. Replace the ECM only after all of the other possible causes of a particular problem have been investigated.

ECM Pull Up Voltage

In order to aid in diagnostics of certain types of electrical circuits that are controlled by the ECM, an internal "pull up voltage" is connected to ECM switch and sensor signal input contacts. An above normal voltage is internally connected to the ECM signal input circuit through a resistor.

During normal operation, the switch or sensor signal will hold the circuit low or at a certain signal amplitude, however, circuit conditions such as a loss of power to the component, a disconnection, or an open circuit will allow the circuit to be pulled high by the ECM pull up voltage. This will result in an above normal voltage condition at the ECM contact. As a result, the ECM will activate an FMI 03 (voltage above normal) diagnostic code for the affected circuit.

The types of ECM input circuits that have pull up voltage present are:

  • Pulse Width Modulated (PWM) sensor input circuits

  • Switch to ground switch input circuits

  • Active analog (voltage) input signal circuits

  • Passive analog (resistance) input signal circuits

ECM Pull Down Voltage

In order to aid in diagnostics of electrical circuits that are controlled by the ECM, an internal "pull down voltage" is connected to ECM switch to battery type input circuits.

During normal operation, the switch contacts that are allowing the connection to a voltage source will hold the circuit high. When circuit conditions such as a loss of power to the switch supply voltage, a disconnection in the switch circuit or an open circuit will allow the circuit to be pulled low by the ECM pull down voltage. This will result in a below normal voltage condition at the ECM contact. As a result, the ECM will activate an FMI 04 (voltage below normal) diagnostic code for the affected circuit.

Inputs

The machine has several different types of input devices. The ECM receives machine status information from the input devices and determines the correct output action that is needed in order to control machine operations based on memory and software parameters. The machine utilizes the following types of inputs: switch type and sensor type.

Switches provide signals to the switch inputs of the ECM. The possible outputs of a switch are listed: an open signal, a grounded signal and + battery signal.

Sensors provide an electrical signal to the ECM that constantly changes. The sensor input to the ECM can be one of several different types of electrical signals such as: pulse width modulated (PWM) signals, voltage signals and frequency input signals. Each possible input to the Machine ECM is listed in the tables for the 70-pin connectors.

Outputs

The ECM sends electrical signals through the outputs. The outputs can create an action or the outputs can provide information to the ECM. The ECM can send output signals to the system components in one of several different electrical signal types such as: driver outputs, sinking driver outputs, sensor power supply outputs and data link outputs. The possible outputs for the Machine ECM are listed in the tables for the 70-pin connectors.

Input/Output

Communication between the Machine ECM and the other control modules on the machine is conducted over data link circuits. The data link circuits allow the sharing of information with other electronic control modules. The data link circuits are bidirectional. The data link circuit allows the ECM to send information and to receive information.

The ECM supports two types of data link systems.

  • Cat Data Link

  • SAE J1939 Data Link

The two types of data links are the main structure for communication between all of the control modules on the machine. More than one CAN data link system can be present on a machine. Dedicated CAN data link circuits can be used for communication between specific controls on the machine.

Communication between the Machine ECM and the other control modules on the machine are conducted over the J1939 Data Link circuit that is connected to each control module. The ECMs use the Cat Data Link to send and receive information from the AVSpare Electronic Technician (ET).

A module identifier (MID) is assigned to each ECM on a machine. The MID for the Machine ECM is 039.

Note: All diagnostic codes for the components in the machine control system are activated by the Machine ECM (MID 039).

Note: The following tables list every possible connection for the Machine ECM. Some of the listed circuits may not be applicable to your machine. Other attachments may be installed.

D6N/EH

Table 1
Machine ECM Connector J1 (MID 039)
Contact Descriptions (1)    
No.     Function     Type    
1     Key Switch On     Input    
2     XMSN Output Speed Sensor 1 +        
3     XMSN Output Speed Sensor 1-        
4     XMSN Output Speed Sensor 2 +        
5     XMSN Output Speed Sensor 2 -        
10     Cat Data Link +     Input/Output    
13     - Battery     System Ground    
37     A/C Thermostat     Sw to +Batt Input    
15     TC Output Speed Sensor +        
16     TC Output Speed Sensor -        
17     Engine Speed Sensor +     Frequency +    
18     Engine Speed Sensor -     Frequency -    
20     Cat Data Link -     Input/Output    
21     5V Power Sensor Return     ECM Ground    
22     A/C Recirc Temp        
23     - Battery     System Ground    
24     A/C Manual Mode     Switch to Battery    
25     A/C Auto Mode     Switch to Battery    
26     Implement Shutoff (N/O)     STG Input    
27     Implement Shutoff (N/C)     STG Input    
28     Increment Switch (N/O)        
29     A/C Louver Temp     Passive Analog Input (Resistive)    
30     A/C Evaporation Freeze Probe        
31     +Battery     System Power    
33     Reverse (N/O)     STG Input    
34     Reverse (N/C)     STG Input    
35     Parking brake Switch (Engaged)     STG Input    
38     + Battery     System Power    
39     + Battery     System Power    
40     Parking brake Switch (Released)     STG Input    
41     Autoshift Switch (N/O)     STG Input    
42     Autoshift Switch (N/C)     STG Input    
43     Auto Kickdown Switch (N/O)     STG Input    
44     +8 V Sensor Supply     Power Supply    
45     8 V Sensor Return     ECM Ground    
47     +Battery     System Power    
48     XMSN Speed Clutch 1        
49     XMSN Speed Clutch 2        
50     PWM Driver Return (1-4)     PWM Driver Output    
51     XMSN Speed Clutch 3        
52     Brake Valve Solenoid        
54     PWM Driver Return 11-12     Solenoid Return    
55     PWM Driver Return 9-10     Solenoid Return    
56     10V Sensor Return     System Ground    
57     - Battery     System Ground    
58     Blade Tilt Right Solenoid     PWM Driver Output    
59     Blade Tilt Left Solenoid     PWM Driver Output    
60     PWM Driver Return 5-8     Solenoid Return    
61     Blade Raise Solenoid     PWM Driver Output    
62     Blade Lower Solenoid     PWM Driver Output    
63     Auto/Man & Blade Shake (N/O)     STG Input    
64     Auto/Man & Blade Shake (N/C)     STG Input    
65     XMSN Reverse Clutch        
66     XMSN Forward Clutch        
67     Left Steering Valve Solenoid     PWM Driver Output    
68     Right Steering Valve Solenoid     PWM Driver Output    
69     +10V Supply     Power Supply    
70     - Battery     System Ground    
( 1 ) Contacts that are not listed are not used.

Table 2
Machine ECM Connector J2 (MID 039)
Contact Descriptions (1)    
No.     Function     Type    
1     Keyswitch (Crank)     Sw to +Batt Input    
2     A/C Clutch Solenoid        
3     Parking brake Solenoid        
4     Load Return 1     ECM Ground    
5     Secondary Brake Solenoid        
6     Backup Alarm        
7     Start Relay     On/Off Output    
8     Load Return 2     ECM Ground    
14     Alternator R Term     R Term    
19     A/C Condensers Relay     Sinking Output    
20     Water Valve Actuator Signal        
24     Steering Lever Position Sensor 1     PWM Input    
25     Steering Lever Position Sensor 2     PWM Input    
26     Steering Lever Position Sensor 3     PWM Input    
28     Upshift Switch (N/O)     STG Input    
29     Upshift Switch (N/C)     STG Input    
30     Downshift Switch (N/O)     STG Input    
31     Downshift Switch (N/C)     STG Input    
32     Service Brake Pedal Sensor     PWM Input    
33     FNR Position Sensor     PWM Input    
34     Steering Motor Speed Sensor A     PWM Input    
35     Steering Motor Speed Sensor B        
36     Forward Switch (N/O)     STG Input    
37     Forward Switch (N/C)     STG Input    
38     AC Manual Mode     STG Input    
39     Decrement Switch (N/O)     STG Input    
40     Blade Angle Sensor     PWM Input    
41     Blade Raise Select Sensor     PWM Input    
42     Blade Tilt Select Sensor     PWM Input    
43     Ripper Joystick Sensor     PWM Input    
64     CAN B Data Link +     Input/Output    
65     CAN B Data Link -     Input/Output    
67     CAN A Data Link +     Input/Output    
68     CAN A Data Link -     Input/Output    
( 1 ) Contacts that are not listed are not used.

Implement ECM

Table 3
Electronic Implement Control Connector
Contact Descriptions (1)    
No.     Function     Type    
1     + Battery     System Power    
2     - Battery     System Ground    
3     Key Switch     Input    
7     Location Code (GND)     STG/STB    
8     Location Code (GND)     STG/STB    
9     Location Code (Open)     STG/STB    
14     + Battery     System Power    
15     - Battery     System Ground    
16     8V Sensor Return     System Ground    
19     Location Code (GND)     STG/STB    
20     PTO Filter Bypass Switch        
21     Charge Filter Bypass Switch        
22     Implement Cal Sensor        
24     + Battery     System Power    
25     - Battery     System Ground    
26     Implement Shutoff Solenoid        
27     Implement Shutoff Solenoid Return        
36     Hydraulic Oil Temp Sender        
37     XMSN Oil Temp Sensor (Sump)        
38     Fuel Level Sender        
39     TCO Temperature Sender        
42     Blade Angle Left Solenoid        
43     Blade Angle Left Solenoid Return        
48     Blade Angle Right Solenoid        
49     Blade Angle Right Solenoid Return        
50     Ripper Raise Solenoid        
51     Ripper Raise Solenoid Return        
57     Cat Data Link +     Input/Output    
58     Ripper Lower Solenoid        
59     Ripper Lower Solenoid Return        
64     CAN A Data Link +     Input/Output    
65     CAN A Data Link -     Input/Output    
68     8V Sensor Power     System Power    
70     Cat Data Link -     Input/Output    
( 1 ) Contacts that are not listed are not used.



Illustration 2g01608833

Implement ECM pin orientation




Illustration 3g01608896

Information System:

2009/06/15 Improved Routing of the Harness Enhances Reliability {1408, 5063, 5705}
2009/06/01 The Assembly Process for the Front Axle Mount is Now Improved {3258, 3260}
2009/10/01 New Turbochargers and New Heatshields are Now Used {1052, 1067, 1073}
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2009/06/08 An Improved Hydraulic Hose Assembly With Improved Routing Is Now Used For the Head End Of the Hydraulic cylinders On the Ripper {5057, 5352, 6310}
2010/05/27 An Improved Oil Supply Line for the Turbocharger Is Used on Some Track-Type Tractors {1052, 1307}
2009/06/15 Selection of Wire Rope and Use for PACCAR Winches {5163}